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A child swinging on a swing in sitting p...

A child swinging on a swing in sitting position, stands up, then the time period of the swing will.

A

increase

B

decrease

C

remain same

D

increase if the child is long and decrease If the chile is short

Text Solution

Verified by Experts

The correct Answer is:
B
The time period of the swing is
`T = 2pisqrt((l_(eff))/(g))`
Where `l_(eff) ` is the distance from point of suspension to the centre of mass of child. As the child stands up, the `l_(eff)` decrease hence T decreases.
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ALLEN-SIMPLE HARMONIC MOTION-Exercise-05 [A]
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